New virtual keyboard for player: (1) Much more user friendly (button directions, no submenu). (2) Now voiced like the recorder keypad. (3) More compact and straightforward code.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5819 a1c6a512-1295-4272-9138-f99709370657

apps/player/keyboard.c

@@ -19,13 +19,16 @@
 #include "lcd.h"
 #include "button.h"
 #include "kernel.h"
+#include "system.h"
 #include "version.h"
 #include "debug_menu.h"
 #include "sprintf.h"
 #include <string.h>
 #include "lcd-player-charset.h"
-#include "lang.h"
+#include "settings.h"
-#include "debug.h"
+#include "status.h"
+#include "talk.h"
+#include "misc.h"
 
 #define KEYBOARD_PAGES 3
 
@@ -38,7 +41,8 @@ static unsigned short* kbd_setupkeys(int page, int* len)
     unsigned short ch;
     int i = 0;
 
-    switch (page) {
+    switch (page) 
+    {
         case 0: /* Capitals */
             for (ch = 'A'; ch <= 'Z'; ch++)
                 lines[i++] = ch;
@@ -74,254 +78,204 @@ static unsigned short* kbd_setupkeys(int page, int* len)
 #define KEYBOARD_CURSOR 0x7f
 #define KEYBOARD_ARROW 0x92
 
-#define MENU_LINE_INPUT 0
+/* helper function to spell a char if voice UI is enabled */
-#define MENU_LINE_NEWCHARS 1
+static void kbd_spellchar(char c)
-#define MENU_LINE_BACKSPACE 2
+{
-#define MENU_LINE_DELETE 3
+    static char spell_char[2] = "\0\0"; /* store char to pass to talk_spell */
-#define MENU_LINE_ACCEPT 4
+
-#define MENU_LINE_QUIT 5
+    if (global_settings.talk_menu) /* voice UI? */
-#define MENU_LINE_LAST 5
+    {
+        spell_char[0] = c; 
+        talk_spell(spell_char, false);
+    }
+}
 
 int kbd_input(char* text, int buflen)
 {
     bool done = false;
+    bool redraw = true;
+    bool line_edit = false;
     int page = 0, x = 0;
     int linelen;
+
+    int len, i;
+    int editpos, curpos, leftpos;
     unsigned short* line = kbd_setupkeys(page, &linelen);
-    int menu_line=0;
-    int cursor_pos=0;
-    int button_pressed;
     unsigned char temptext[12];
-    int old_cursor_pos=0;               /* Windowed cursor movement */
+    char c;
-    int left_pos=0;
 
-    lcd_clear_display();
+    int button, lastbutton = 0;
 
-    old_cursor_pos=cursor_pos=strlen(text);
+    editpos = strlen(text);
-    if (9<cursor_pos)
-        left_pos=cursor_pos-9;
 
-    while (!done) {
+    if (global_settings.talk_menu) /* voice UI? */
-        int i, p;
+        talk_spell(text, true); /* spell initial text */ 
-        int len = strlen(text);
-        int scrpos;
-        int dir;
 
-        scrpos = cursor_pos - left_pos;
+    while (!done)
-        dir = cursor_pos - old_cursor_pos;
+    {
+        len = strlen(text);
         
-        /* Keep the cursor on screen, with a 2 character scroll margin */
+        if (redraw)
-        if(dir < 0) {
+        {
-           if(scrpos < 2) {
+            if (line_edit) 
-              left_pos = cursor_pos - 2;
+            {
-              if(left_pos < 0)
+                lcd_putc(0, 0, ' ');
-                 left_pos = 0;
+                lcd_putc(0, 1, KEYBOARD_ARROW);
-           }
-        }
-        if(dir > 0) {
-           if(scrpos > 7) {
-              left_pos = cursor_pos - 9;
-              if(left_pos < 0)
-                 left_pos = 0;
-              if(left_pos > len - 9)
-                 left_pos = len - 9;
             }
+            else
+            {
+                lcd_putc(0, 0, KEYBOARD_ARROW);
+                lcd_putc(0, 1, ' ');
             }
 
-        p=0;
-        i = left_pos;
-        while (p<10 && text[i]) {
-            temptext[p++]=text[i++];
-        }
-        temptext[p]=0;
-        lcd_remove_cursor();
-        lcd_puts(1, 0, temptext);
-        lcd_put_cursor(cursor_pos-left_pos+1, 0, 0x7f);
-        old_cursor_pos=cursor_pos;
-
-        switch (menu_line) {
-            case MENU_LINE_INPUT:
-            case MENU_LINE_NEWCHARS:
             /* Draw insert chars */
             temptext[0] = KEYBOARD_INSERT_LEFT;
             temptext[1] = line[x%linelen];
             temptext[2] = KEYBOARD_INSERT_RIGHT;
-                for (i=1; i < 8; i++) {
+            for (i = 1; i < 8; i++)
+            {
                 temptext[i+2] = line[(i+x)%linelen];
             }
             temptext[i+2] = 0;
+            lcd_puts(1, 0, temptext);
+
+            /* write out the text */
+            curpos = MIN(editpos, 9 - MIN(len - editpos, 2));
+            leftpos = editpos - curpos;
+            strncpy(temptext, text + leftpos, 10);
+            temptext[10] = 0;
+            
+            if (leftpos)
+                temptext[0] = '<';
+            if (len - leftpos > 10)
+                temptext[9] = '>';
+
+            lcd_remove_cursor();
             lcd_puts(1, 1, temptext);
-                break;
+            lcd_put_cursor(curpos + 1, 1, KEYBOARD_CURSOR);
-            case MENU_LINE_BACKSPACE:
+            
-                lcd_puts_scroll(1, 1, str(LANG_PLAYER_KEYBOARD_BACKSPACE));
+            status_draw(true);
-                break;
-            case MENU_LINE_DELETE:
-                lcd_puts_scroll(1, 1, str(LANG_PLAYER_KEYBOARD_DELETE));
-                break;
-            case MENU_LINE_ACCEPT:
-                lcd_puts_scroll(1, 1, str(LANG_PLAYER_KEYBOARD_ACCEPT));
-                break;
-            case MENU_LINE_QUIT:
-                lcd_puts_scroll(1, 1, str(LANG_PLAYER_KEYBOARD_ABORT));
-                break;
-        }
-        if (menu_line==MENU_LINE_INPUT) {
-            lcd_putc(0, 0, KEYBOARD_ARROW);
-            lcd_putc(0, 1, ' ');
-        } else {
-            lcd_putc(0, 0, ' ');
-            lcd_putc(0, 1, KEYBOARD_ARROW);
         }
 
-        lcd_update();
+        /* The default action is to redraw */
+        redraw = true;
 
-        button_pressed=button_get(true);
+        button = button_get_w_tmo(HZ/2);
-        switch (menu_line) 
+        switch (button)
         {
-            case MENU_LINE_INPUT:
+            case BUTTON_STOP:  /* abort */
-                switch (button_pressed)
+                return -1;
-                {
-                    case BUTTON_PLAY:
-                    case BUTTON_PLAY | BUTTON_REPEAT:
-                        if (cursor_pos<len)
-                            cursor_pos++;
-                        button_pressed=BUTTON_NONE;
                 break;
             
-                    case BUTTON_STOP:
+            case BUTTON_MENU:  /* page flip */
-                    case BUTTON_STOP | BUTTON_REPEAT:
-                        if (cursor_pos>0)
-                            cursor_pos--;
-                        button_pressed=BUTTON_NONE;
-                        break;
-                }
-                break;
-                
-            case MENU_LINE_NEWCHARS:
-                switch (button_pressed)
-                {
-                    case BUTTON_PLAY:
-                    case BUTTON_PLAY | BUTTON_REPEAT:
-                        x=(x+1+linelen)%linelen;
-                        button_pressed=BUTTON_NONE;
-                        break;
-                    case BUTTON_STOP:
-                    case BUTTON_STOP | BUTTON_REPEAT:
-                        x=(x-1+linelen)%linelen;
-                        button_pressed=BUTTON_NONE;
-                        break;
-            
-                    case BUTTON_MENU:
-                        /* shift */
                 if (++page == KEYBOARD_PAGES)
                     page = 0;
                 line = kbd_setupkeys(page, &linelen);
+                if (x > linelen - 1)
+                    x = linelen - 1;
+                kbd_spellchar(line[x]);
                 break;
 
-                    case BUTTON_ON:
+            case BUTTON_ON:    /* toggle mode */
-                        if (len < buflen) {
+                line_edit = !line_edit;
-                            /* ON insert the char */
+                if (!line_edit)
-                            for (i=len+1; i>cursor_pos; i--) {
+                    kbd_spellchar(line[x]);
-                                text[i]=text[i-1];
-                            }
-                            text[cursor_pos]=line[x];
-                            button_pressed=BUTTON_NONE;
-                            cursor_pos++;
-                        }
-                        break;
-                }
-                break;
-
-            case MENU_LINE_BACKSPACE:
-                switch (button_pressed) {
-                    case BUTTON_ON:
-                    case BUTTON_PLAY:
-                    case BUTTON_PLAY | BUTTON_REPEAT:
-                        button_pressed=BUTTON_NONE;
-                        if (0 < cursor_pos) {
-                            for (i=--cursor_pos; i<=len; i++) {
-                                text[i]=text[i+1];
-                            }
-                        }
-                        break;
-                    case BUTTON_STOP:
-                    case BUTTON_STOP | BUTTON_REPEAT:
-                        button_pressed=BUTTON_NONE;
-                        for (i=cursor_pos; i<=len; i++) {
-                            text[i]=text[i+1];
-                        }
-                        break;
-                }
-                break;
-            case MENU_LINE_DELETE:
-                switch (button_pressed) {
-                    case BUTTON_ON:
-                    case BUTTON_PLAY:
-                    case BUTTON_PLAY | BUTTON_REPEAT:
-                        button_pressed=BUTTON_NONE;
-                        for (i=cursor_pos; i<=len; i++) {
-                            text[i]=text[i+1];
-                        }
-                        break;
-                    case BUTTON_STOP:
-                    case BUTTON_STOP | BUTTON_REPEAT:
-                        button_pressed=BUTTON_NONE;
-                        if (0 < cursor_pos)
-                            for (i=--cursor_pos; i<=len; i++) {
-                                text[i]=text[i+1];
-                            }
-                        break;
-                }
-                break;
-
-            case MENU_LINE_ACCEPT:
-                switch (button_pressed) {
-                    case BUTTON_ON:
-                    case BUTTON_PLAY:
-                    case BUTTON_PLAY | BUTTON_REPEAT:
-                        button_pressed=BUTTON_NONE;
-                        done=true;
-                        break;
-                }
-                break;
-
-            case MENU_LINE_QUIT:
-                switch (button_pressed) {
-                    case BUTTON_ON:
-                    case BUTTON_PLAY:
-                    case BUTTON_PLAY | BUTTON_REPEAT:
-                        return 1;
-                        break;
-                }
-                break;
-        }
-
-        /* Handle unhandled events */
-        switch (button_pressed) {
-            case BUTTON_NONE:
-                /* button is already handled */
-                break;
-
-            case BUTTON_MENU | BUTTON_STOP:
                 break;
 
             case BUTTON_RIGHT:
             case BUTTON_RIGHT | BUTTON_REPEAT:
-                if (menu_line<MENU_LINE_LAST)
+                if (line_edit)
-                    menu_line++;
+                {
+                    if (editpos < len)
+                    {
+                        editpos++;
+                        kbd_spellchar(text[editpos]);
+                    }
+                }
                 else
-                  menu_line=0;
+                {
+                    if (x < linelen - 1)
+                        x++;
+                    else
+                        x = 0;
+                    kbd_spellchar(line[x]);
+                }
                 break;
 
             case BUTTON_LEFT:
             case BUTTON_LEFT | BUTTON_REPEAT:
-                if (menu_line>0)
+                if (line_edit)
-                    menu_line--;
+                {
+                    if (editpos)
+                    {
+                        editpos--;
+                        kbd_spellchar(text[editpos]);
+                    }
+                }
                 else
-                  menu_line=MENU_LINE_LAST;
+                {
+                    if (x)
+                        x--;
+                    else
+                        x = linelen - 1;
+                    kbd_spellchar(line[x]);
+                }
+                break;
+
+            case BUTTON_PLAY | BUTTON_REPEAT:
+                /* accepts what was entered and continues */
+                done = true;
+                break;
+
+            case BUTTON_PLAY | BUTTON_REL:
+                if (lastbutton != BUTTON_PLAY)
+                    break;
+                if (line_edit) /* backspace in line_edit */
+                {
+                    if (editpos > 0)
+                    {
+                        for (i = editpos; i < len; i++)
+                            text[i-1] = text[i];
+                        text[i-1] = '\0';
+                        editpos--;
+                    }
+                }
+                else  /* inserts the selected char */
+                {
+                    if (len < buflen)
+                    {
+                        c = line[x];
+                        if (editpos == len)
+                        {
+                            text[len] = c;
+                            text[len+1] = 0;
+                        }
+                        else
+                        {
+                            for (i = len ; i >= editpos; i--)
+                                text[i+1] = text[i];
+                            text[editpos] = c;
+                        }
+                        editpos++;
+                    }
+                }
+                if (global_settings.talk_menu) /* voice UI? */
+                    talk_spell(text, false); /* speak revised text */
+                break;
+
+            case BUTTON_NONE:
+                status_draw(false);
+                redraw = false;
+                break;
+
+            default:
+                default_event_handler(button);
                 break;
         }
+        if (button != BUTTON_NONE)
+            lastbutton = button;
     }
     
     return 0;
 }
+